hibernate - Spring的异常转换机制没有启动

Question

我有一个场景，我故意试图违反 unique constraint ，期待 Spring 的DataIntegrityViolationException被抛出，但事实并非如此。 javax.persistence.PersistenceException抛出的原因为 org.hibernate.exception.ConstraintViolationException但没有发生 Spring 翻译。

DAO和Service类已正确注释为 @Repository和@Service和存储库 @PersistenceContext编辑。

服务:

  @Service
  public class BookServiceImpl implements BookService {
  @Inject private BookDAO bookDao;

  @Transactional(propagation = Propagation.REQUIRED)
  public Book createBook(Book book) {
    Book bk = null;
    try {
      bk = bookDao.makePersistent(book);
    } catch (AppDAOException e) {
      throw new AppServiceException(e);
    }
    return bk;
  }
}

我的配置:

<bean id="libmsEMF"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="libmsDS" />
    <property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="libmsEMF" />
    <property name="dataSource" ref="libmsDS" />
</bean>

<bean id="jpaVendorAdapter"
    class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">

    <property name="database" value="SQL_SERVER" />
    <property name="showSql" value="false" />
    <property name="generateDdl" value="false" />
    <property name="databasePlatform" value="org.hibernate.dialect.SQLServer2008Dialect" />
</bean>

<bean
    class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />

异常跟踪:

Caused by: javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
  at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763)
  at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
  at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1683)
  at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1187)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:289)
  at com.sun.proxy.$Proxy60.persist(Unknown Source)
  at com.hurontg.common.persistence.AbstractGenericDAOImpl.makePersistent(AbstractGenericDAOImpl.java:103)
  ... 57 more
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
  at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:129)
  at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
  at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
  at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
  at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:211)
  at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:96)
  at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)
  at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)
  at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3558)
  at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98)
  at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:490)
  at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:195)
  at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:179)
  at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:214)
  at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324)
  at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288)
  at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194)
  at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
  at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:84)
  at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206)
  at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149)
  at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
  at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811)
  at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784)
  at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789)
  at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
  ... 64 more
Caused by: java.sql.SQLException: Violation of UNIQUE KEY constraint 'UK_AUTHOR_TITLE'. Cannot insert duplicate key in object 'dbo.BOOK'. The duplicate key value is (Jim Corbett, The Temple Tiger).
  at net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:372)
  at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2886)
  at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2328)
  at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:638)
  at net.sourceforge.jtds.jdbc.JtdsStatement.processResults(JtdsStatement.java:614)
  at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQL(JtdsStatement.java:573)
  at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeUpdate(JtdsPreparedStatement.java:707)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.apache.tomcat.jdbc.pool.interceptor.AbstractQueryReport$StatementProxy.invoke(AbstractQueryReport.java:235)
  at com.sun.proxy.$Proxy70.executeUpdate(Unknown Source)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.apache.tomcat.jdbc.pool.interceptor.AbstractQueryReport$StatementProxy.invoke(AbstractQueryReport.java:235)
  at com.sun.proxy.$Proxy70.executeUpdate(Unknown Source)
  at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)
  ... 85 more

Answer 1

问题可能是您的上下文中没有任何 PersistenceExceptionTranslator beans，它可以解开 Hibernate 的 JPA Persistence 异常以查看原因是什么。

尝试将 HibernateJpaDialect bean 添加到您的应用程序上下文中:

在Java中

@Bean
public HibernateJpaDialect hibernateJpaDialect() {
    return new HibernateJpaDialect();
}

或者在 XML 中

<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />

在 Spring 执行转换之前，Hibernate 的 AbstractEntityManagerImpl 将 Hibernate 的异常包装为 JPA 异常。 HibernateJpaDialect 实现了 Spring 的 PersistenceExceptionTranslator 接口(interface)，并且知道如何解开这些 PersistenceException。